This system features upper control arms with ICON's patented Delta Joint PRO. Delta Joint PRO is ICON's innovative new suspension articulation joint which combines the durability and longevity of factory style ball joints with performance and strength that exceeds traditional motorsports-style ball joints. The Delta Joint PRO features a new rebuildable, serviceable design in which any component may be removed, inspected, and replaced without having to purchase a whole new joint. Strength and durability are improved by using a larger ball with 56% more bearing surface than our standard Delta Joint, along with improved lubrication sealing. But improved performance is at the heart of the Delta Joint PRO, with a full 90 degrees of articulation, from one extreme to the other. This represents a 14% improvement in range of motion, over the highly capable original Delta Joint, allowing for maximum bind-free suspension movement through the complete range of travel. The Delta Joint PRO is built to take the abuse, with a chromoly ball and shaft that has a bearing surface hardened to Rockwell C 55. The replaceable races are made of graphite-impregnated sintered metal, machined to the finest tolerance to provide a flawless, metal-to-metal bearing interface. We also redesigned the lubrication system, with lubricant channels that distribute grease more efficiently without extending past the bearing seal.
Billet aluminum Delta Joint PRO upper control arms not only add strength and durability but help retain factory alignment specs, offer on-vehicle caster/camber adjustment, and allow for the extra lift height this system provides. ICON 2.5 Aluminum Series CDCV piggyback reservoir rear shocks utilize vehicle-specific valving and offer increased damping and heat dissipation, balancing the performance of the truck from front to rear. ICON's exclusive Compression Damping Dual Speed (CDXS) valves are included for precisely dialing in your suspension performance. CDXS controls fluid flow under compression, with independent adjustability of high speed and low speed compression force. 10 discreet detented settings for both low and high-speed adjustment knobs allow separate adjustments for handling response and overall aggressiveness. ICON Multi-Rate Leaf Springs allow rear spring rate and ride height customization, improve ride quality, and reduce axle wrap by eliminating the factory rear blocks. Rear ride height is kept within an acceptable range using the ICON billet aluminum 1" lowering shackles. The ICON 2021-2024 F-150 4WD Stage 4 suspension system is an excellent choice for those looking to enhance the capabilities of their pickup.
ICON Vehicle Dynamics 2021-2024 Ford F-150 4WD suspension systems are designed with maximum performance and the serious driver in mind. ICON's primary focus is to increase wheel travel and damping ability, which translates into outstanding vehicle control and ride quality. To achieve this, these systems include high-strength CNC machined ductile iron steering knuckles that replicate the suspension geometry of the F-150 Tremor and are effectively a Tremor “conversion” for your F-150 4WD. This Stage 4 system includes vehicle-specific tuned 2.5” coilover shocks featuring CDCV equipped remote reservoirs for exceptional cooling properties and ICON-engineered coil springs for superior vehicle “feel” through the range of travel. These coilovers are adjustable for 3.5-4.5” of front lift, allowing the use of larger, more aggressive wheel and tire combos. Their combination with the ICON steering knuckles also allows for a 20% increase in wheel travel compared to other ICON F-150 kits.
ICON suspension systems lift your Ford F-150 4WD while improving ride quality and performance. With endless hours spent testing and tuning our suspension components and shocks, you’ll have the best suspension solution on the market.
All shock absorbers equipped with ICON CDXS for independent adjustability of high speed and low speed compression force for handling response and aggressiveness
TECH NOTE: Rear springs can be configured to provide 1.5"-3.5" of rear lift or to tune ride height to compensate for added static weight in rear of vehicle
OEM Wheels & Tires Fitment: Not compatible with all available OE wheel/tire combinations. Aftermarket wheels with lower offset/less backspace recommended.
Billet Upper Control Arms with Delta Joint Pro ball joints for added strength, durability, and alignment spec range with on-vehicle adjustability
Recommended Aftermarket Tires: 34" x 12.50" (Larger tires may fit but fender trimming and modifications will be required.)
APPLICATION NOTE #166: If equipped with Dynamic Bending Headlamps and/or OnBoard Scales part # 611081 is also required
TECH NOTE: Models equipped with PowerBoost hybrid engines will have front lift height range of 3.25-4.25" over stock
TECH NOTE: Models equipped with Power-Stroke diesel engines will have front lift height range of 3-4" over stock
APPLICATION NOTE #55: Shocks Are Fully Serviceable. Coilover Heights Indicated Are For A Stock Equipped Vehicle
20% increase in front wheel travel and improved ride quality over stock with no change in towing capacity
APPLICATION NOTE #129: Will Not Work With Factory Installed Electronically Controlled Suspension
2.5 Aluminum Series piggyback reservoir rear shocks with 7/8" hardened chromed steel shafts
ICON 21-24 Ford F-150 4WD 2.5 Series Stage 4 Billet CDXS Suspension System w/ Leaf Pack
High strength ductile iron steering knuckles replicate F-150 Tremor suspension geometry
Vehicle specific tuned front and rear shocks for superior damping and vehicle control
Billet aluminum lowering shackles feature maintenance and noise free OE Ford bushings
Recommended Aftermarket Wheels: ICON Alloys - 20x9" w/ 5.625" Backspace / 16mm Offset
APPLICATION NOTE #130: Equipped With Dynamic Bending Headlamps Purchase Part# 611071
Recommended Aftermarket Wheels: ICON Alloys - 17x8.5" w/ 5” Backspace / 6mm Offset
Recommended Aftermarket Wheels: ICON Alloys - 18x9" w/ 5.25" Backspace / 6mm Offset
Reduced rear axle wrap and improved ride quality compared to stock leaf springs
2.5 Series front coilovers with remote reservoirs for improved shock cooling
21-24 FORD F150 4WD 3.5-4.5" STAGE 4 SUSPENSION SYSTEM BILLET CDXS LEAF PACK
APPLICATION NOTE #152: ICON Delta Joint Pro Upper Control Arms Required
Corrosion resistant CAD plated coilover shock bodies with 7/8" shafts
Adjustable coilovers offer 3.5-4.5" of front lift height over stock
TECH NOTE: Not compatible with models equipped with OnBoard Scales
FK rod end bearings for extended longevity and minimal deflection
100% Bolt-on system - no cutting or welding necessary for install
TECH NOTE: Not compatible with models equipped with BlueCruise
3 user-adjustable rear spring rates for unique vehicle setups
TECH NOTE: Only compatible with 4-wheel drive (4WD) models
+1.50" rear lift height over stock w/ 400lb constant load
+1.00" rear lift height over stock w/ 850lb constant load
6061 Aircraft grade aluminum CNC machined components
High strength alloy CNC machined lower bar pin
+1.50" rear lift height over stock (unloaded)
+2.75" rear lift height over stock (unloaded)
+3.50" rear lift height over stock (unloaded)
MULTI-RATE INFO (with ICON Billet Shackles):
TECH NOTE: Not compatible with F-150 Raptor
+20% spring rate over Option #1
+40% spring rate over option #1
Option #1 (as shipped)
Suspension Lift Kit
SUSPENSION SYSTEM
Option #2
Option #3
K93144LD
